Finding the Fourth Proportional to 9,141.75, 12,615.71 and 4,950.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.75 : 12,615.71 = 4,950.09 : x
2. Step 2: Convert to fraction form
   9,141.75/12,615.71 = 4,950.09/x
3. Step 3: Cross multiply
   9,141.75x = 12,615.71 × 4,950.09
4. Step 4: Simplify right side
   9,141.75x = 62,448,875.16
5. Step 5: Solve for x
   x = 62,448,875.16/9,141.75
6. Step 6: Final answer
   x = 6,831.17